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Heart|Natural|GIA

0.91ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 6542169069

Certificate GIA 6542169069

Diamond specifications and retailer prices

From £468 GBP
HK$4,900 HKD
As of October 30, 2026
Save £604 GBP (56%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £2,202 GBP at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 0.91ct natural heart diamond

This 0.91ct natural heart sits in the just-under-one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6542169069. Listed at 8 retailers as of October 29, 2026, with a 129% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.91
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Pavilion angle43.2°
OriginNatural
Grading LabGIA
CertificateGIA 6542169069
Dimensions5.60 × 6.71 × 4.20 mm
L/W Ratio1.20
Top View
5.60 mm6.71 mm0.91 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6542169069
Side View
Table 58.0%CrownGirdle: THN-VTKPavilion 43.2°Culet: NoneDepth 62.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £601 GBP|Low: £420 GBP|High: £1,357 GBP|Avg: £711 GBP|-10.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 3£468 GBP
Retailer 5£537 GBP
Retailer 6£560 GBP
Retailer 7£578 GBP
Retailer 1£601 GBP
Retailer 4£871 GBP
Retailer 2£1,072 GBP

36 data points across 7 retailers

8 retailers£468 GBP to £1,072 GBP

A
Cheapest Retailer
-
£468 GBP
HK$4,900 HKD
B+
Retailer 2
-
£537 GBP
$720 USD
View
Final sale: no returns
A
Retailer 3
-
£560 GBP
$750 USD
View
Retailer 4
-
£578 GBP
SGD 1,046 SGD
View
Price last confirmed 8 days ago
A
Retailer 5
-
£601 GBP
View
Retailer 6
-
£871 GBP
$1,167 USD
View
Price last confirmed 10 days ago
B+
Retailer 7
-
£1,072 GBP
View
Most Expensive
NZ Jewellers
2f36755f-78ac-4ce8-b092-862abde499fe · Sep 25
£2,202 GBP
$2,951 USD
View
Price last confirmed 36 days ago
7 more retailers have this diamond
Prices start from £468 GBPSave up to £604 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
0.91ct Heart
£468 GBP